Publication Abstracts

Carlson et al. 1987

Carlson, B.E., M.J. Prather, and W.B. Rossow, 1987: The role of aqueous chemistry in determining the composition and cloud structure of the upper troposphere on Uranus. Astrophys. J., 321, L97-L101, doi:10.1086/185013.

Aqueous chemistry on Uranus affects the atmospheric abundances of NH3 and H2S below the methane cloud base. We present a complete thermochemical equilibrium model for the H2O-NH3-H2S system. Inclusion of H2S increases the aqueous removal of NH3 to 20-30 percent, but aqueous chemistry alone cannot account for the depletion of NH3 in the 150-200 K region of the atmosphere required to fit microwave observations. Formation of NH4SH clouds can account for the observed depletion provided the H2S/NH3 ratio is enhanced by a factor of 4 relative to solar. Perturbations to the chemical balance between N and S, for example by the general circulation on Uranus, would then produce regions with either NH3 or H2S aloft.

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BibTeX Citation

@article{ca01700z,
  author={Carlson, B. E. and Prather, M. J. and Rossow, W. B.},
  title={The role of aqueous chemistry in determining the composition and cloud structure of the upper troposphere on Uranus},
  year={1987},
  journal={Astrophys. J.},
  volume={321},
  pages={L97--L101},
  doi={10.1086/185013},
}

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RIS Citation

TY  - JOUR
ID  - ca01700z
AU  - Carlson, B. E.
AU  - Prather, M. J.
AU  - Rossow, W. B.
PY  - 1987
TI  - The role of aqueous chemistry in determining the composition and cloud structure of the upper troposphere on Uranus
JA  - Astrophys. J.
VL  - 321
SP  - L97
EP  - L101
DO  - 10.1086/185013
ER  -

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